Anomalous dispersion of the acoustic mode in liquid Bi

M. Inui, Y. Kajihara, S. Munejiri, S. Hosokawa, Ayano Chiba, K. Ohara, S. Tsutsui, A. Q R Baron

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Inelastic x-ray scattering measurements on liquid Bi were carried out. Prominent acoustic mode excitations were observed in the dynamic structure factor to beyond 12nm-1, which resolves previously conflicting results as to their presence beyond 6nm-1. We find the dispersion curve of the excitation energy with momentum transfer is nearly flat from 7 to 15nm-1 consistent with ab initio calculations of liquid Bi [J. Souto, Phys. Rev. B 81, 134201 (2010)PRBMDO1098-012110.1103/PhysRevB.81.134201]. Our ab initio and classical molecular dynamics simulations suggest that a long-range force is needed to reproduce the flatness of the dispersion curve, and the long-range force is correlated with a local structure consisting of shorter and longer bonds in the liquid.

Original languageEnglish
Article number054206
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number5
DOIs
Publication statusPublished - 2015 Aug 25

Fingerprint

acoustics
Liquids
liquids
Momentum transfer
Excitation energy
flatness
curves
x ray scattering
excitation
momentum transfer
Molecular dynamics
inelastic scattering
Scattering
molecular dynamics
X rays
Computer simulation
simulation
energy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Inui, M., Kajihara, Y., Munejiri, S., Hosokawa, S., Chiba, A., Ohara, K., ... Baron, A. Q. R. (2015). Anomalous dispersion of the acoustic mode in liquid Bi. Physical Review B - Condensed Matter and Materials Physics, 92(5), [054206]. https://doi.org/10.1103/PhysRevB.92.054206

Anomalous dispersion of the acoustic mode in liquid Bi. / Inui, M.; Kajihara, Y.; Munejiri, S.; Hosokawa, S.; Chiba, Ayano; Ohara, K.; Tsutsui, S.; Baron, A. Q R.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 92, No. 5, 054206, 25.08.2015.

Research output: Contribution to journalArticle

Inui, M, Kajihara, Y, Munejiri, S, Hosokawa, S, Chiba, A, Ohara, K, Tsutsui, S & Baron, AQR 2015, 'Anomalous dispersion of the acoustic mode in liquid Bi', Physical Review B - Condensed Matter and Materials Physics, vol. 92, no. 5, 054206. https://doi.org/10.1103/PhysRevB.92.054206
Inui, M. ; Kajihara, Y. ; Munejiri, S. ; Hosokawa, S. ; Chiba, Ayano ; Ohara, K. ; Tsutsui, S. ; Baron, A. Q R. / Anomalous dispersion of the acoustic mode in liquid Bi. In: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Vol. 92, No. 5.
@article{fcd0697da21f491294e5eb925d3ea76f,
title = "Anomalous dispersion of the acoustic mode in liquid Bi",
abstract = "Inelastic x-ray scattering measurements on liquid Bi were carried out. Prominent acoustic mode excitations were observed in the dynamic structure factor to beyond 12nm-1, which resolves previously conflicting results as to their presence beyond 6nm-1. We find the dispersion curve of the excitation energy with momentum transfer is nearly flat from 7 to 15nm-1 consistent with ab initio calculations of liquid Bi [J. Souto, Phys. Rev. B 81, 134201 (2010)PRBMDO1098-012110.1103/PhysRevB.81.134201]. Our ab initio and classical molecular dynamics simulations suggest that a long-range force is needed to reproduce the flatness of the dispersion curve, and the long-range force is correlated with a local structure consisting of shorter and longer bonds in the liquid.",
author = "M. Inui and Y. Kajihara and S. Munejiri and S. Hosokawa and Ayano Chiba and K. Ohara and S. Tsutsui and Baron, {A. Q R}",
year = "2015",
month = "8",
day = "25",
doi = "10.1103/PhysRevB.92.054206",
language = "English",
volume = "92",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "5",

}

TY - JOUR

T1 - Anomalous dispersion of the acoustic mode in liquid Bi

AU - Inui, M.

AU - Kajihara, Y.

AU - Munejiri, S.

AU - Hosokawa, S.

AU - Chiba, Ayano

AU - Ohara, K.

AU - Tsutsui, S.

AU - Baron, A. Q R

PY - 2015/8/25

Y1 - 2015/8/25

N2 - Inelastic x-ray scattering measurements on liquid Bi were carried out. Prominent acoustic mode excitations were observed in the dynamic structure factor to beyond 12nm-1, which resolves previously conflicting results as to their presence beyond 6nm-1. We find the dispersion curve of the excitation energy with momentum transfer is nearly flat from 7 to 15nm-1 consistent with ab initio calculations of liquid Bi [J. Souto, Phys. Rev. B 81, 134201 (2010)PRBMDO1098-012110.1103/PhysRevB.81.134201]. Our ab initio and classical molecular dynamics simulations suggest that a long-range force is needed to reproduce the flatness of the dispersion curve, and the long-range force is correlated with a local structure consisting of shorter and longer bonds in the liquid.

AB - Inelastic x-ray scattering measurements on liquid Bi were carried out. Prominent acoustic mode excitations were observed in the dynamic structure factor to beyond 12nm-1, which resolves previously conflicting results as to their presence beyond 6nm-1. We find the dispersion curve of the excitation energy with momentum transfer is nearly flat from 7 to 15nm-1 consistent with ab initio calculations of liquid Bi [J. Souto, Phys. Rev. B 81, 134201 (2010)PRBMDO1098-012110.1103/PhysRevB.81.134201]. Our ab initio and classical molecular dynamics simulations suggest that a long-range force is needed to reproduce the flatness of the dispersion curve, and the long-range force is correlated with a local structure consisting of shorter and longer bonds in the liquid.

UR - http://www.scopus.com/inward/record.url?scp=84941063192&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84941063192&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.92.054206

DO - 10.1103/PhysRevB.92.054206

M3 - Article

AN - SCOPUS:84941063192

VL - 92

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 5

M1 - 054206

ER -